Our propriety 7075 ultra-strength Spectre Rail AR Handguard, seamlessly integrates with our Side Charging AR15 upper receiver, it is the most compact under the rail suppression system that does not compromise aesthetics or functionality. Dimensionally matched, the assembly produces seamless lines from the receiver to rail, that is interlocked and unable to rotate and lose site alignment. Ultra-rigid, the design has a 1.78” Inside diameter for the later 6 inches allowing up to a 30 caliber can under the rail. The exterior is profiled for core use, providing a non-slip textured surface that eliminates the need for rail covers. M-Lok mounting points that are appropriately located, and 100% functional when combined with a suppressor.